Improvement in blind-hinge



' stent (time.

JAMES L'. CATHCART, GEORGETOVV'N, DISTRICT OF COLUlVIB-IA.v

Letters Patent No. 87,243, dated Febmm/ry 23, 1869. d

IMPROVEMENT IN :BLIND-HINGE.

The Schedule referred to in these Letters Patentdan'd making part of thestrisce.'

To all wlwm tt ma/y concern Be it known that I, J AMES L. OA'rHcARfr, ofGeorge` town, in the District of Columbia, have invented a new anduseful Hinge for Window-Blinds; and I do hereby declare that thefollowing is a full and exact description thereof, referencevbeinglhadto thev accompanying drawings, an d to the letters of reference markedth ereon.l

My invention has for its object v the providing a cheaper, lesscomplicated, and more perfect hinge for securely holding theWindow-blind open, and prevent any possibilityT of its becoming unlockedwhen once thrown open and the catch takes hold of the hinge; and

It consists of a combination of contrivances attached to and operatingupon the hinge itself.

To enable others skilled in the art to make and use my invention, I willdescribe its construction and operation.

Figure l is la perspective view of the hinge, partly closed, and showingall the operating-parts;

Figure 2 is a cross-section of the same; and

Figure 3 is a view of the face-side of the hinge.

A and A', in the drawings, represent the two wings of the ordinary hingefor window-blinds.

a, is a pivot-pin, made fast towing A of the hinge, and upon which isplaced .the latch B, which is constructed with an eye fitting on to thepivot, and secured thereon in any proper way to allow of easy action.

This 'latch makes a right angle, at a proper distance from the pivotedpoint, forming the catch or means of holding upon the wing of the hingeA when in position, as seen in gs. 2 and 3, and is inclined at theextreme end, to insure its entry into the hole b in the wing A of thehinge. l

.d is a stud, in which is secured a spring, d', which `tends to forcethe latch toward the stud c, and thus to securely keep the latch alwaysin position to enter the hole b, and force the catch, having notch b init, over and upon the wing of the hinge, as seen in iig. 2.

The studio prevents the spring from forcing the latch so far that theend of the catch will not enter the hole b in the wing of the hinge whenthe inclinede'nd strikes the bottom of the hole, and is forced up untilthe notch b embraces the wing of the hinge, and is held in that positionby the action of the spring.

e is a friction-plate, attached towing A', and upon ,Y d

which the latch B slides, instead of upon the hinge itself, wherebythefrction of the latch is lessened, and

the latch is heldina parallel position to the wings of the hinge whenthe blind is open.

The latch may be lconstructed in different forms, and other kinds ofsprings may be used to force the latch to its hold, as, for instance,there maybe a coiled spring l by the notch in the latch -beingforced'through the hole in the hinge and upon thewing of the hinge.

To release the latch and close the blind, the end of the latch has onlyto beraised, and at the same time swing the blind shut, andthe operationis complete.

I am aware that blind-hinges have been constructed with a latch andholding-device on one wing, and a catch upo'nthe other wing. Suchconstruction and arrangement, I do not claim as my invention, for theconstruction and arrangementin my hinge are entirely different, and Iclaim no arrangement, construction, or combination of devices, except ashereinbefore described.

Having thus described my invention,

What I claim, and desire to secure by Letters Patent, is-

'The latclr B, pivotcd, at a, to one wing of a hinge, I

and having notch b', studs Qand d, With spring d', when used incombination with a hinge having. hole b and plate e in its other wing,constructed and arranged to operate substantially in the mannerdescribed.

JAMES L. OATHOART.

Witdesses I E. N. MYGATT, Geo. M. Lnwrs.

